Vertical hot-water heater.



A. GRANT.

VERTICAL HOT WATER HEATER.

APPLICATION FILED SEPT. '1, 1911.

1,04=6,1 78. Patented De. 3, 1912.

INVENTOH Alexander Gran A TTOHIVEYS COLUMBIA PLANOORAPH CO.,WASH|NGTON, D. c.

ALEXANDER GRANT, OF NEW YORK, N. Y.

VERTICAL HOT-WATER HEATER.

Specification of Letters Patent.

Patented Dec. 3, 1912.

Application filed September '7, 1911. Serial No. 648,144.

To all whom it may concern Be it known that I, ALEXANDER GRANT, a citizen of the United States, residing in the city of New York, borough of Manhattan, county and State of New York, have invented, a certain new and useful Vertical HotNVater Heater, of which the following is a specification.

This invention is a vertical hot water heater wherein the structure is provided with an exterior shell and an interior shell, the water to be heated circulating between said shells and the heat and products of combustion are caused to circulate within the inner shell in a manner to heat substantially the entire surface of said inner shell, thereby quickly heating the water contained between the inner and outer shells.

The invention pertains, more particularly, to heaters wherein water is kept in a hot condition for domestic and other purposes, and wherein the fire is banked or kept in a slow burning condition, in contradistinction to boilers the fires of which are kept burning brightly in order to secure a rapid flow of heat and smoke, to the end that steam is generated quickly and in such volume as will maintain at all times a supply of steam under pressure.

Boilers for water heating purposes are usually constructed in sections or with tubes, through which tubes the smoke and gases are free to circulate, but practical experience has shown that tubular boilers for hot water are not economical, for the reason that the tubes become pitted by the action of the water and furnace gases, thereby resulting in frequent renewals and repairs, with a consequent increase in the cost of maintenance. In contradistinction to tubular boilers, the heater of this invention is not provided with tubes through which the smoke and gases are caused to circulate. Accordingly, the present invention embodies a smoke chamber positioned within the boiler shell and above the fire-box, which smoke chamber has a single direct connection with the fire-box. Within said smoke chamber is positioned a battle or deflector, the same being situated between the smoke inlet to, and the smoke outlet from, the chamber, said bafileor deflector operating to direct the products of combustion into direct contact with the walls of the chamber so as to utilize to the full extent the heat in the escaping products of combustion.

A salient feature of the invention is a water leg projecting substantially horizontally from a shell of the heater and positioned intermediate the fire-box and the smoke chamber, said water leg forming a support for the vertical b aille or deflector, the latter extending upwardly from the water leg and into the smoke chamber for the purpose of producing flues in said chamber for the circulation of smoke and heat around the battle, whereby the smoke and heat are caused to contact with substantially the entire area of the shell forming the upper chamber.

Other features and advantages of the invention will appear from the following description, taken in connection with the drawings.

"In the drawings, the figure is a vertical section through a vertical hot water heater embodying this invention.

The heater is, preferably, cylindrical in form and composed of sheet boiler steel, although cast iron may be used in the con- 'st-ruction, or some of the parts thereof.

5 is an outer shell which is provided with a cold water inlet 6, preferably near the base of the heater, and a hot water outlet 7, at or near the top thereof. 7

The interior of this heater is provided with a fire-box 8 and with a smoke chamber 9 positioned above the fire-box. The firebox is composed of the shell 10 and the dome 12, said shell 10 being substantially concentric to the exterior shell 5. The smoke chamber comprises a shell 13, a lower head 14 and an upper head or dome 15, said shell 13 being substantially concentric to the outer shell 5. The heads and domes 12, 14 and 15 are secured to their respective shells by suitable means, such as rivets, etc. Dome 12 of the fire-box 8 and lower head 14, of the smoke chamber 9, are spaced a suitable distance from each other and cooperate to produce a water leg 17, which extends over the fire-box.

A novel feature of this heater is a substantially vertical baflie or deflector which is contained within the smoke chamber, said baiiie or deflector being positioned between a smoke inlet to said chamber and a smoke exit from the chamber. Different constructional forms of the baflie or deflector may be employed. As shown, the bafiie or deflector is in the form of a bridge wall 18. Said bridge wall 18 is composed of fire brick,

built upon lower head 14, and it extends vertically through the smoke chamber 9, nearly to the dome 15, thereby dividing said chamber and producing an updraft flue and a downdraft flue therein.

A flue 19 extends from the fire-box to the secondary chamber. Said flue opens through the dome 12, and extends through water leg 17 and head 14, said flue being slightly inclined from the fire-box toward the front of the smoke chamber.

The rear wall of the heater is provided with a smoke exit 20; it being preferred to bring the shells 5 and 13 together and to unite them in any suitable manner around this flue opening 20.

In the heater shown, cold water is admitted to the water compartment 21, between shells 5 and 10, by means of the inlet 6, the water thus supplied surroundingsubstantially the inner shell 10 forming the fire-box and the shell 13 constituting the smoke chamber.

A fire having been started, the gases are conducted from the fire-box through flue 19, heating the walls of said flue and the walls of the smoke chamber 9. By slightly inclining the flue 19, as described, the heat is directed against the front wall of the inner shell 13; from thence the heat flows upwardly between said shell 13 and the deflector 18, thence over the top of said deflector and against dome 15, and thence downwardly between the other side of the deflector 18 and the shell 13 at the rear of the heater, and thence through eXit :20 to a stack or chimney, thus heating substantially the entire inner shell 13. It will be readily understood that water admitted at 6 will become heated before it reaches the chamber over dome 15, so that the heat passing over deflector 18 will also heat dome 15.

Having thus fully described the invention, what I claim as new, and desire to secure by Letters Patent is 1. A vertical hot-water heater embodying an exterior shell provided at its top with a wateroutlet and in its. side with a smoke outlet, a fire-box shell positioned within the lower part of the exterior shell to produce an intervening water space, said fire-box shell being provided with a crown-sheet, a smoke-drum shell positioned within the upaforesaid water spaces, a smoke flue extending through said horizontal water leg and connecting the smoke-box shell with the smoke-drum shell, and a smoke deflector eX- tending upwardly from the bottom head of the smoke-drum shell and positioned in said shell between the smoke inlet thereto and the smoke outlet therefrom.

2. A vertical hot-water heater embodying an exterior shell provided at its top with a water-outlet and in its side with a smoke outlet, a fire-box shell positioned within the lower part of the exterior shell to produce an intervening water space, said fire-box shell being provided with an arched crownsheet, a smoke-drum shell positioned within the upper part of said exterior shell to produce an intervening water space, said smokedrum shell being provided with a closed crown-sheet and with a dished bottom head, said arched crownsheet of the fire-box shell and the dished bottom head, of the smokedrum shell being curved reversely to each other and positioned in opposing relation to produce between them a substantially hori- Zontal water. leg which is in free communication with the aforesaid water spaces, a smoke flue extending through said horizon tal water leg and connecting the fire-box shell with the smoke-drum shell, said smoke flue being inclined upwardly in a direction away from the smoke outlet, and a deflector extending upwardly from the dished bottom head of the smoke-drum shell and positioned therein between a smoke inlet to, and a smoke outlet from, said smoke-drum shell.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ALEXANDER GRANT.

Witnesses J. K. CLARK, J. F. MOTHERSHEAD.

Gop'ies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

